UBUNTU-CVE-2026-48045

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Source
https://ubuntu.com/security/CVE-2026-48045
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48045.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-48045
Upstream
Published
2026-07-17T19:17:00Z
Modified
2026-07-29T10:18:35Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Zeroconf is a pure Python implementation of multicast DNS service discovery. Prior to 0.149.12, AsyncListener.handle_query_or_defer retained every truncated TC-bit incoming query, each up to _MAX_MSG_ABSOLUTE = 8966 bytes, in self._deferred[addr] and armed a per-address timer in self._timers[addr] without capping the per-address list or distinct addr keys, allowing unauthenticated hosts on the local link over UDP/5353 (224.0.0.251 / ff02::fb) to spoof sources, grow _deferred and _timers, and cause memory exhaustion and quadratic CPU burn. This issue is fixed in version 0.149.12.

References

Affected packages

Ubuntu:16.04:LTS
python-zeroconf

Package

Name
python-zeroconf
Purl
pkg:deb/ubuntu/python-zeroconf?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.17.2-1
0.17.4-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-zeroconf",
            "binary_version": "0.17.4-1"
        },
        {
            "binary_name": "python3-zeroconf",
            "binary_version": "0.17.4-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48045.json"
Ubuntu:18.04:LTS
python-zeroconf

Package

Name
python-zeroconf
Purl
pkg:deb/ubuntu/python-zeroconf?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.19.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-zeroconf",
            "binary_version": "0.19.1-1"
        },
        {
            "binary_name": "python3-zeroconf",
            "binary_version": "0.19.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48045.json"
Ubuntu:20.04:LTS
python-zeroconf

Package

Name
python-zeroconf
Purl
pkg:deb/ubuntu/python-zeroconf?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.21.3-1
0.23.0-1
0.24.4-0ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-zeroconf",
            "binary_version": "0.24.4-0ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48045.json"
Ubuntu:22.04:LTS
python-zeroconf

Package

Name
python-zeroconf
Purl
pkg:deb/ubuntu/python-zeroconf?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.26.1-1
0.36.11-1
0.36.12-1
0.36.13-1
0.37.0-1
0.38.1-1
0.38.3-1
0.38.3-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-zeroconf",
            "binary_version": "0.38.3-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48045.json"
Ubuntu:24.04:LTS
python-zeroconf

Package

Name
python-zeroconf
Purl
pkg:deb/ubuntu/python-zeroconf?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.76.0-1
0.119.0-1
0.126.0-1
0.127.0-1
0.128.0-1
0.128.0-2
0.128.4-1
0.129.0-1
0.130.0-1
0.131.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-zeroconf",
            "binary_version": "0.131.0-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48045.json"
Ubuntu:26.04:LTS
python-zeroconf

Package

Name
python-zeroconf
Purl
pkg:deb/ubuntu/python-zeroconf?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

0.*
0.147.0-1
0.148.0-1
0.148.0-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-zeroconf",
            "binary_version": "0.148.0-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48045.json"